diff --git a/src/controllers/api/infestedFoundryController.ts b/src/controllers/api/infestedFoundryController.ts
index a01ae16b..74ff3f35 100644
--- a/src/controllers/api/infestedFoundryController.ts
+++ b/src/controllers/api/infestedFoundryController.ts
@@ -3,15 +3,10 @@ import { getAccountIdForRequest } from "@/src/services/loginService";
 import { getJSONfromString } from "@/src/helpers/stringHelpers";
 import { getInventory, addMiscItems, updateCurrency, addRecipes } from "@/src/services/inventoryService";
 import { IOid } from "@/src/types/commonTypes";
-import {
-    IConsumedSuit,
-    IInfestedFoundry,
-    IInventoryDatabaseDocument,
-    IMiscItem,
-    ITypeCount
-} from "@/src/types/inventoryTypes/inventoryTypes";
+import { IConsumedSuit, IInfestedFoundry, IMiscItem, ITypeCount } from "@/src/types/inventoryTypes/inventoryTypes";
 import { ExportMisc, ExportRecipes } from "warframe-public-export-plus";
 import { getRecipe } from "@/src/services/itemDataService";
+import { TInventoryDatabaseDocument } from "@/src/models/inventoryModels/inventoryModel";
 
 export const infestedFoundryController: RequestHandler = async (req, res) => {
     const accountId = await getAccountIdForRequest(req);
@@ -239,7 +234,7 @@ interface IHelminthSubsumeRequest {
     Recipe: string;
 }
 
-export const handleSubsumeCompletion = (inventory: IInventoryDatabaseDocument): ITypeCount[] => {
+export const handleSubsumeCompletion = (inventory: TInventoryDatabaseDocument): ITypeCount[] => {
     const [recipeType] = Object.entries(ExportRecipes).find(
         ([_recipeType, recipe]) =>
             recipe.secretIngredientAction == "SIA_WARFRAME_ABILITY" &&
diff --git a/src/controllers/api/inventoryController.ts b/src/controllers/api/inventoryController.ts
index f38fe0ec..868dca5c 100644
--- a/src/controllers/api/inventoryController.ts
+++ b/src/controllers/api/inventoryController.ts
@@ -1,11 +1,10 @@
 import { RequestHandler } from "express";
 import { getAccountForRequest } from "@/src/services/loginService";
-import { toInventoryResponse } from "@/src/helpers/inventoryHelpers";
 import { Inventory } from "@/src/models/inventoryModels/inventoryModel";
 import { config } from "@/src/services/configService";
 import allDialogue from "@/static/fixed_responses/allDialogue.json";
 import { ILoadoutDatabase } from "@/src/types/saveLoadoutTypes";
-import { IInventoryDatabaseDocument, IShipInventory, equipmentKeys } from "@/src/types/inventoryTypes/inventoryTypes";
+import { IInventoryResponse, IShipInventory, equipmentKeys } from "@/src/types/inventoryTypes/inventoryTypes";
 import { IPolarity, ArtifactPolarity } from "@/src/types/inventoryTypes/commonInventoryTypes";
 import {
     ExportCustoms,
@@ -26,9 +25,7 @@ export const inventoryController: RequestHandler = async (request, response) =>
         return;
     }
 
-    const inventory = await Inventory.findOne({ accountOwnerId: account._id.toString() })
-        .populate<{ LoadOutPresets: ILoadoutDatabase }>("LoadOutPresets")
-        .populate<{ Ships: IShipInventory }>("Ships");
+    const inventory = await Inventory.findOne({ accountOwnerId: account._id.toString() });
 
     if (!inventory) {
         response.status(400).json({ error: "inventory was undefined" });
@@ -63,14 +60,17 @@ export const inventoryController: RequestHandler = async (request, response) =>
         inventory.InfestedFoundry.AbilityOverrideUnlockCooldown &&
         new Date() >= inventory.InfestedFoundry.AbilityOverrideUnlockCooldown
     ) {
-        handleSubsumeCompletion(inventory as unknown as IInventoryDatabaseDocument);
+        handleSubsumeCompletion(inventory);
         await inventory.save();
     }
 
-    //TODO: make a function that converts from database representation to client
-    const inventoryJSON = inventory.toJSON();
-
-    const inventoryResponse = toInventoryResponse(inventoryJSON);
+    const inventoryWithLoadOutPresets = await inventory.populate<{ LoadOutPresets: ILoadoutDatabase }>(
+        "LoadOutPresets"
+    );
+    const inventoryWithLoadOutPresetsAndShips = await inventoryWithLoadOutPresets.populate<{ Ships: IShipInventory }>(
+        "Ships"
+    );
+    const inventoryResponse = inventoryWithLoadOutPresetsAndShips.toJSON<IInventoryResponse>();
 
     if (config.infiniteCredits) {
         inventoryResponse.RegularCredits = 999999999;
diff --git a/src/helpers/inventoryHelpers.ts b/src/helpers/inventoryHelpers.ts
index d85fc978..d7fa7b25 100644
--- a/src/helpers/inventoryHelpers.ts
+++ b/src/helpers/inventoryHelpers.ts
@@ -1,14 +1,6 @@
 import { IMongoDate, IOid } from "@/src/types/commonTypes";
-import { IInventoryResponse } from "@/src/types/inventoryTypes/inventoryTypes";
 import { Types } from "mongoose";
 
-//TODO: this needs to be addressed: a schema's toJSON is responsible for changing Oid and Date to their corresponding Response versions __id to "ItemId":{"$oid":"6450f720bc562ebf030222d4"}, and a Date to "date":{"$date":{"$numberLong":"unix timestamp"})
-export const toInventoryResponse = (inventoryDatabase: { accountOwnerId: Types.ObjectId }): IInventoryResponse => {
-    // eslint-disable-next-line @typescript-eslint/no-unused-vars
-    const { accountOwnerId, ...inventoryResponse } = inventoryDatabase;
-    return inventoryResponse as unknown as IInventoryResponse;
-};
-
 export const toOid = (objectId: Types.ObjectId): IOid => {
     return { $oid: objectId.toString() } satisfies IOid;
 };
diff --git a/src/models/inventoryModels/inventoryModel.ts b/src/models/inventoryModels/inventoryModel.ts
index 37a674c2..ec39bb1d 100644
--- a/src/models/inventoryModels/inventoryModel.ts
+++ b/src/models/inventoryModels/inventoryModel.ts
@@ -1,4 +1,4 @@
-import { Model, Schema, Types, model } from "mongoose";
+import { Document, Model, Schema, Types, model } from "mongoose";
 import {
     IFlavourItem,
     IRawUpgrade,
@@ -1061,6 +1061,7 @@ inventorySchema.set("toJSON", {
     transform(_document, returnedObject) {
         delete returnedObject._id;
         delete returnedObject.__v;
+        delete returnedObject.accountOwnerId;
 
         const inventoryDatabase = returnedObject as IInventoryDatabase;
         const inventoryResponse = returnedObject as IInventoryResponse;
@@ -1114,3 +1115,15 @@ type InventoryDocumentProps = {
 type InventoryModelType = Model<IInventoryDatabase, {}, InventoryDocumentProps>;
 
 export const Inventory = model<IInventoryDatabase, InventoryModelType>("Inventory", inventorySchema);
+
+// eslint-disable-next-line @typescript-eslint/ban-types
+export type TInventoryDatabaseDocument = Document<unknown, {}, IInventoryDatabase> &
+    Omit<
+        IInventoryDatabase & {
+            _id: Types.ObjectId;
+        } & {
+            __v: number;
+        },
+        keyof InventoryDocumentProps
+    > &
+    InventoryDocumentProps;
diff --git a/src/services/guildService.ts b/src/services/guildService.ts
index dda01ef8..1fcddad4 100644
--- a/src/services/guildService.ts
+++ b/src/services/guildService.ts
@@ -2,7 +2,7 @@ import { Request } from "express";
 import { getAccountIdForRequest } from "@/src/services/loginService";
 import { getInventory } from "@/src/services/inventoryService";
 import { Guild } from "@/src/models/guildModel";
-import { IInventoryDatabaseDocument } from "../types/inventoryTypes/inventoryTypes";
+import { TInventoryDatabaseDocument } from "@/src/models/inventoryModels/inventoryModel";
 
 export const getGuildForRequest = async (req: Request) => {
     const accountId = await getAccountIdForRequest(req);
@@ -10,7 +10,7 @@ export const getGuildForRequest = async (req: Request) => {
     return await getGuildForRequestEx(req, inventory);
 };
 
-export const getGuildForRequestEx = async (req: Request, inventory: IInventoryDatabaseDocument) => {
+export const getGuildForRequestEx = async (req: Request, inventory: TInventoryDatabaseDocument) => {
     const guildId = req.query.guildId as string;
     if (!inventory.GuildId || inventory.GuildId.toString() != guildId) {
         throw new Error("Account is not in the guild that it has sent a request for");
diff --git a/src/services/inventoryService.ts b/src/services/inventoryService.ts
index 1265e802..8a6323ea 100644
--- a/src/services/inventoryService.ts
+++ b/src/services/inventoryService.ts
@@ -1,4 +1,4 @@
-import { Inventory } from "@/src/models/inventoryModels/inventoryModel";
+import { Inventory, TInventoryDatabaseDocument } from "@/src/models/inventoryModels/inventoryModel";
 import postTutorialInventory from "@/static/fixed_responses/postTutorialInventory.json";
 import { config } from "@/src/services/configService";
 import { Types } from "mongoose";
@@ -7,7 +7,6 @@ import {
     IChallengeProgress,
     IConsumable,
     IFlavourItem,
-    IInventoryDatabaseDocument,
     IMiscItem,
     IMission,
     IRawUpgrade,
@@ -95,7 +94,7 @@ export const combineInventoryChanges = (InventoryChanges: IInventoryChanges, del
     }
 };
 
-export const getInventory = async (accountOwnerId: string) => {
+export const getInventory = async (accountOwnerId: string): Promise<TInventoryDatabaseDocument> => {
     const inventory = await Inventory.findOne({ accountOwnerId: accountOwnerId });
 
     if (!inventory) {
@@ -485,7 +484,7 @@ const isCurrencyTracked = (usePremium: boolean): boolean => {
 };
 
 export const updateCurrency = (
-    inventory: IInventoryDatabaseDocument,
+    inventory: TInventoryDatabaseDocument,
     price: number,
     usePremium: boolean
 ): ICurrencyChanges => {
@@ -590,7 +589,7 @@ const addCrewShip = async (typeName: string, accountId: string) => {
 };
 
 const addGearExpByCategory = (
-    inventory: IInventoryDatabaseDocument,
+    inventory: TInventoryDatabaseDocument,
     gearArray: IEquipmentClient[] | undefined,
     categoryName: TEquipmentKey
 ): void => {
@@ -622,7 +621,7 @@ const addGearExpByCategory = (
     });
 };
 
-export const addMiscItems = (inventory: IInventoryDatabaseDocument, itemsArray: IMiscItem[] | undefined): void => {
+export const addMiscItems = (inventory: TInventoryDatabaseDocument, itemsArray: IMiscItem[] | undefined): void => {
     const { MiscItems } = inventory;
 
     itemsArray?.forEach(({ ItemCount, ItemType }) => {
@@ -638,7 +637,7 @@ export const addMiscItems = (inventory: IInventoryDatabaseDocument, itemsArray:
 };
 
 export const addShipDecorations = (
-    inventory: IInventoryDatabaseDocument,
+    inventory: TInventoryDatabaseDocument,
     itemsArray: IConsumable[] | undefined
 ): void => {
     const { ShipDecorations } = inventory;
@@ -655,7 +654,7 @@ export const addShipDecorations = (
     });
 };
 
-export const addConsumables = (inventory: IInventoryDatabaseDocument, itemsArray: IConsumable[] | undefined): void => {
+export const addConsumables = (inventory: TInventoryDatabaseDocument, itemsArray: IConsumable[] | undefined): void => {
     const { Consumables } = inventory;
 
     itemsArray?.forEach(({ ItemCount, ItemType }) => {
@@ -670,7 +669,7 @@ export const addConsumables = (inventory: IInventoryDatabaseDocument, itemsArray
     });
 };
 
-export const addRecipes = (inventory: IInventoryDatabaseDocument, itemsArray: ITypeCount[] | undefined): void => {
+export const addRecipes = (inventory: TInventoryDatabaseDocument, itemsArray: ITypeCount[] | undefined): void => {
     const { Recipes } = inventory;
 
     itemsArray?.forEach(({ ItemCount, ItemType }) => {
@@ -685,7 +684,7 @@ export const addRecipes = (inventory: IInventoryDatabaseDocument, itemsArray: IT
     });
 };
 
-export const addMods = (inventory: IInventoryDatabaseDocument, itemsArray: IRawUpgrade[] | undefined): void => {
+export const addMods = (inventory: TInventoryDatabaseDocument, itemsArray: IRawUpgrade[] | undefined): void => {
     const { RawUpgrades } = inventory;
     itemsArray?.forEach(({ ItemType, ItemCount }) => {
         const itemIndex = RawUpgrades.findIndex(i => i.ItemType === ItemType);
@@ -700,7 +699,7 @@ export const addMods = (inventory: IInventoryDatabaseDocument, itemsArray: IRawU
 };
 
 export const addFusionTreasures = (
-    inventory: IInventoryDatabaseDocument,
+    inventory: TInventoryDatabaseDocument,
     itemsArray: IFusionTreasure[] | undefined
 ): void => {
     const { FusionTreasures } = inventory;
@@ -729,7 +728,7 @@ export const updateChallengeProgress = async (
 };
 
 export const addSeasonalChallengeHistory = (
-    inventory: IInventoryDatabaseDocument,
+    inventory: TInventoryDatabaseDocument,
     itemsArray: ISeasonChallenge[] | undefined
 ): void => {
     const category = inventory.SeasonChallengeHistory;
@@ -746,7 +745,7 @@ export const addSeasonalChallengeHistory = (
 };
 
 export const addChallenges = (
-    inventory: IInventoryDatabaseDocument,
+    inventory: TInventoryDatabaseDocument,
     itemsArray: IChallengeProgress[] | undefined
 ): void => {
     const category = inventory.ChallengeProgress;
@@ -763,7 +762,7 @@ export const addChallenges = (
     });
 };
 
-const addMissionComplete = (inventory: IInventoryDatabaseDocument, { Tag, Completes }: IMission): void => {
+const addMissionComplete = (inventory: TInventoryDatabaseDocument, { Tag, Completes }: IMission): void => {
     const { Missions } = inventory;
     const itemIndex = Missions.findIndex(item => item.Tag === Tag);
 
diff --git a/src/types/inventoryTypes/inventoryTypes.ts b/src/types/inventoryTypes/inventoryTypes.ts
index d608a232..6d6dd9bc 100644
--- a/src/types/inventoryTypes/inventoryTypes.ts
+++ b/src/types/inventoryTypes/inventoryTypes.ts
@@ -10,8 +10,6 @@ import {
     IEquipmentDatabase
 } from "@/src/types/inventoryTypes/commonInventoryTypes";
 
-//Document extends will be deleted soon. TODO: delete and migrate uses to ...
-export interface IInventoryDatabaseDocument extends IInventoryDatabase, Document {}
 export interface IInventoryDatabase
     extends Omit<
         IInventoryResponse,